SPL Set ID: 8fe557ae-4ff0-47a2-8ec3-37bb0fbdcc64

Liraglutide injection contains liraglutide, an analog of human GLP-1 and acts as a GLP-1 receptor agonist. Liraglutide is manufactured by synthetic process. The peptide precursor of liraglutide has been manufactured to be 97% homologous to native human GLP-1 by substituting arginine for lysine at position 34. Liraglutide is made by attaching a C-16 fatty acid (palmitic acid) with a glutamic acid spacer on the remaining lysine residue at position 26 of the peptide precursor. The molecular formula of liraglutide is C 172 H 265 N 43 O 51 and the molecular weight is 3751.2 Daltons. The structural formula (Figure 1) is: Figure 1. Structural Formula of Liraglutide Liraglutide injection is a sterile, aqueous, clear, colorless or almost colorless solution for subcutaneous use. Each 1 mL of liraglutide injection solution contains 6 mg of liraglutide and the following inactive ingredients: disodium phosphate dihydrate, 1.42 mg; propylene glycol, 14 mg; phenol, 5.5 mg; and water for injection. Liraglutide injection has a pH of approximately 8.15, hydrochloric acid or sodium hydroxide may be added to adjust pH. Each prefilled pen contains a 3 mL solution of liraglutide injection equivalent to 18 mg liraglutide (free-base, anhydrous). Figure 1